Measuring instrument



Seplt. 6, 1932.

2 Sheets-Sheet Fild May s1, 1929 y mlmllm lllmlm u1 vb... I -1` uw l n Ill A... 9. m. w w m 0 nl 21 V f v n Y u. w

Sept. 6, 1932.

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Patented Sept. 6,*12932 Y PANY, AKRQN,.0HI.O;; A CQBPQBATIDNE QE" UHIQ* y,

Mmsunme: msrannm Y Y Appiicatibn ined mi 31,19%..` serial'fn'o. asuma 'Mend of a .stationary frame,

This invention relaas r ma rubber;

` Theobject off the invention is to provide` means for` indicating the gauge ots-heet maV terial before it passes'between calender rolls so thatit any' inequalities existin thematerial, they willi be at once apparent and! the rolls may' be adjusted to44 obviate" them'.`

In` the, production lof slieetfrubber, it very desirable to have: the lsheets of unif'orm thifc'knessand; this is p'articularlyftruewhenn thinrubberl sheetsare' to be applied to fabric:l A small discrepancy' in Y,the thickness of the waste of materia-l rubber` not only causes' but a defective product;` Y

Since the invention described hereinj-isused principally` in` conjunction withl calender rolls adapted for treatment ofrubbergit willvir be helpfnhvinunderstanding the character-V ist-ics-o the invention, toeXplain briefly the operation of calender rolls. Ordinarily, there are three rolls used in a calender unit which are disposed in superposed parallel relationship. The stock in conglomerate form is fed between the upper and intermediate rolls and as it emerges therefrom, it assumes the form of sheet material. This sheet material is then passed between the lower and intermediate rolls and emerges therefrom a sheet material of the desired thickness.` In my invention, a measuring instrument is disposed adjacent the upper calender roll and engages the material after it has passed between the upper and intermediate calender rolls. The measuring instrument is provided with a vernier attachment secured to an eccentric shaft rotatably mounted `in the lower the position of the latter being adjustable by means of a micrometer screw. A roller, mounted upon the eccentric shaft, is adapted to engage the Vsheet material. It will be apparent that means is provided for constantly giving visible evidence of the condition of the sheet material whereby any variations in the material may be immediately note-d and proper adjustments made to secure a `uniform product.

4measuring* i-ir-l strument and lt has particular relation to gaugesgfor measuring' the-thickness of sheet course,v function For a better undenstandingvofthe5 ihren# tion,- reterenee--mayfnow lbel hadv to the accom;-`

caler-rderl with a. measuring device attaehedg.

inventiongf am elevationalA View:` .showing ai# 'which isconstruetedin accordance with, the.L

Fig. 2 is. a;I side elevationalfa View' o' the measuring: instrument;

Fig. S'Zisacross-sectional view roff the messa' Vurigngr instrumenti taken substantially along? a lineIII-IH of Fig. A

The inventionis-V ut flized in; conjunction.

13`l mount/edi invv standards 14. andr I5; which` are: connected? a.: bar :16. Rubberi 'stonk is:f

passed between the rolilersll and l2fto form strip' materiali '183 A2. measuringdevi-ee` 26k 1s' mounted'adjacent therol-'l I2 fby: meanssot" clamps 1'7" secnredto :thev bar '161 The urnlfgT device is provided with a 221 havfingf eccentric: portions: 2373 andi 24'upon which aroll'erfv 251v isfrotatably mounted means on beafringsf 26y and,` 27?. is: mounted bearings :291' and .fftrsecuredf tu: afivame SZhaivinvg 32m engagement withftheibearing surfaces;

sleeve' 35, having threads 365cm@ its'onte'rrV i bearing surfaces; 33s andA Y aa alla sa... A-angeaameaanmatlrreads on' its: innerr pe-ripheey;y is; disposed' about.' the sleexe -135 f andi is -slidably secured to the `trame by'bnlts 39;,springs401 and"nuts241iv A3 dialfI 413i isf'imounted thel belts tti formi 'ai micrometer screw combination wit'h:` a1. graduated handfv wheel? 44,1 which, is:` rigidi-y secu-red to' thes sleeve 351 by'means fof a' wedding#r ring '45, washer M f 4?. lThe position of? the" and thlnnliw frame 32bit-n be regulated uwherebyl theroll'r 25 will: engage the surfacey osheet'mater-ialf of.' any1-@quired thickness.: AThis adjustment is.- eiected by turningfthe :hand wheel 44! toi rotate the sleeve' 35l thereby. slidably actuating the frame 32xcarri'ed by the guidebolts and com-pressing the Asprings 414):A YThe 'S'p1'ings,.of"V to; aid atreverse', adjustrmelrt'."V

vplate 49'adj acent the and obviate the necessity of a very close engagement between the bearing surfaces 33, 34 and the sleeve 35.

An elongate plate 49, having equally spaced transverse slots 50, is secured to -an arm 51 by bolts 52 and rigidly mounted upon the frame 32 by screws 53.` A Vernierl 54, having a number of equally spaced transverse slots 55, preferably equal to the number of slots 50, but with the distance between the slots 55 less than the distance between the slots 50, isv secured, by means of screws 56, to a bifurcated arm 57 which is adjustably mounted upon the shaft 22 by means of a bolt 58.V

device 59 is secured tothe Vernier.

-As best shown in Fig. 2, the axes of the roller 25 and the shaft 22V are parallel and in the same horizontal plane when the medial An illuminating slot av of the plate 49 and the medial slotA bof'the Vernier 54 are in alignment. As long as the sheet material is of uniform thick-y ness the axis of the shaft 22 andthe axis of the roller 25 remain in the same relative positions, but when the thickness of the sheet material18 Varies, the aXis of the roller 25 moves either downwardly by the force of gravity ifthe material is too thin, or upwardly by reason of the force exerted Aby the sheet ina-- Vterial 18 against the roller 25, if the sheet thick. Any 'deviation in theV material is too sheet material-will, therefore, cause the shaft 22 to be turned and the Vernier 54 to be actuated. The plate 49 and Vernier 54 are so .mounted that regardless of the movement of the rollerV 25 caused by the Variation of the sheet material '18 only one of the slots 55 of thevernier 54 and one of the slots 50 ofthe plate 49 can be inalignment at any one position. With this construction, the rays from the illuminating device 59 will flash through` 54 and plate the slots 55 and 50 of the Vernier 49 that are in alignment operator any variation in the sheetmaterial. v

A counterweight 60 is secured to the arm 57 adjacent the shaft 22 and is of suicient weight to balance the shaft 22 and the rollers 23 in any position they may assume. A disc 61 mounted on the opposite end of the shaft 22 is provided with a circumferentially eX- disclosing to the the thickness of tending slot 62, and a weight 63 is adjustably secured to the outer portion of the disc, commensurate in length to the slot.v The position of the weight 63 on the disc 61 is such that the roller 25 is always maintained in contacting relation with the sheet material 18.

--From the foregoingdescription, it is apparent that a measuring instrument is provided witha novel and simple means for in# dicating the slightest Variation in the sheet material. Although I have illustrated only the preferred form of the invention and have described that'form indetail, it will be apparent to those skilled in the art that theinvention is not so limited but that various modifications may be made therein without departing from the spirit of the invention or from the scope of the appended claims.

What I claim is:

1. A device for gauging the thickness of sheet ,material` during its movement over a support, comprising a frame, a rotatable shaft mounted in the frame and having a pair of eccentric portions, a roller mounted on theV eccentric portions of theshaft, an .elongate plate secured to the frame, having substantially equallyV spaced slots therein, an arm mounted on one end of the shaft, an arcuate plate secured to the arm, having slots therein coacting with theslots in the first mentioned plate for indicating variations in the'thick ness of the material, one side of the plates, ing the position of the the support.

illuminating means at and means for adjust,-

frame with respect to 2. A device for. gauging the thickness of the slots first named plate to indicate rotative 

